No idea about OpenBSD (BSDs are completely separate operating systems), but I remember recent case where certain bad FreeBSD result was tracked down to PTS failing to correctly measure test time.
I hate to say this, but I suspect PTS is not actually a benchmark - it’s a publicity generation tool pretending to be a benchmark.
Re:From macOS to FreeBSD
by 1500100900 on Friday February 18, 2022 @05:42PM
(#30392144)
Performance is not the top priority for OpenBSD developers.
Those benchmarks are in agreement with my subjective experience of running (open)bsd on an allegedly well-suoported thinkpad: compared to debian, bsd was sluggish and lasted hours less on battery.